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Simplifying 36x2 + 9x + -20 = 0 Reorder the terms: -20 + 9x + 36x2 = 0 Solving -20 + 9x + 36x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 36 the coefficient of the squared term: Divide each side by '36'. -0.5555555556 + 0.25x + x2 = 0 Move the constant term to the right: Add '0.5555555556' to each side of the equation. -0.5555555556 + 0.25x + 0.5555555556 + x2 = 0 + 0.5555555556 Reorder the terms: -0.5555555556 + 0.5555555556 + 0.25x + x2 = 0 + 0.5555555556 Combine like terms: -0.5555555556 + 0.5555555556 = 0.0000000000 0.0000000000 + 0.25x + x2 = 0 + 0.5555555556 0.25x + x2 = 0 + 0.5555555556 Combine like terms: 0 + 0.5555555556 = 0.5555555556 0.25x + x2 = 0.5555555556 The x term is 0.25x. Take half its coefficient (0.125). Square it (0.015625) and add it to both sides. Add '0.015625' to each side of the equation. 0.25x + 0.015625 + x2 = 0.5555555556 + 0.015625 Reorder the terms: 0.015625 + 0.25x + x2 = 0.5555555556 + 0.015625 Combine like terms: 0.5555555556 + 0.015625 = 0.5711805556 0.015625 + 0.25x + x2 = 0.5711805556 Factor a perfect square on the left side: (x + 0.125)(x + 0.125) = 0.5711805556 Calculate the square root of the right side: 0.755764881 Break this problem into two subproblems by setting (x + 0.125) equal to 0.755764881 and -0.755764881.Subproblem 1
x + 0.125 = 0.755764881 Simplifying x + 0.125 = 0.755764881 Reorder the terms: 0.125 + x = 0.755764881 Solving 0.125 + x = 0.755764881 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + x = 0.755764881 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + x = 0.755764881 + -0.125 x = 0.755764881 + -0.125 Combine like terms: 0.755764881 + -0.125 = 0.630764881 x = 0.630764881 Simplifying x = 0.630764881Subproblem 2
x + 0.125 = -0.755764881 Simplifying x + 0.125 = -0.755764881 Reorder the terms: 0.125 + x = -0.755764881 Solving 0.125 + x = -0.755764881 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + x = -0.755764881 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + x = -0.755764881 + -0.125 x = -0.755764881 + -0.125 Combine like terms: -0.755764881 + -0.125 = -0.880764881 x = -0.880764881 Simplifying x = -0.880764881Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.630764881, -0.880764881}
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